#include<stdio.h>

void main()
{
	int i=1,sum=0;
	do{
		sum=sum+i;
		i++;
	}while(i<=100);
	printf("sum=%d\n",sum);
	
	int j=1,sum1=0;
	while(j<=100)
	{
		sum1=sum1+j;
		j++;
	}
	printf("sum1=%d\n",sum1);
	
	char a='A';
	do{
		printf("%4c",a);
		a++;
	}while(a<='Z');
}
